Been down to the city for a few days, heres some notes:
87.5 - LiveFMUK, has RDS when linked but just ghosting when not linked.
87.8 - don't know, plays a variety of music mostly funk and soul. No ID heard.
88 - Pulse - Good signal with RDS.
88.2 - Saw nothing the whole time
88.4 - Vision, good clean signal
88.6 - B2B? Blank carrier the whole time
89.4 - CityLock, audible but barely enough for RDS (only got it once)
89.8 - Station FM, gets out really well and was audible pretty much anywhere I went.
90 - Hot Digital Online, different station from the one listed in the main post - it's actually http://hotdigitalonline.com/
. Crappy TX has a hiss next to the main signal and some distortion.
90.2 - Point Blank, gets out really well into Central London. I also noticed that they have stereo audio but no stereo pilot tone meaning pretty much no receiver can use it.
90.4 - Don't think I saw anything on here.
90.6 - Anadolu, ok signal, scrolling RDS.
90.8 - Lightning, good signal.
91.5 - Mega, listenable around most of the city
91.8 - Think I heard Turks on this freq but I might be wrong, presumed Dem.
93.8 - Vibesfm, really good signal city-wide with RDS.
95.5 - OnTop FM, good signal city-wide
96.1 - S-Dance, good signal city-wide. No RDS like it had before though.
97.1 - LSR Live, decent signal around Central London.
97.9 - Divine, weak everywhere I observed it but ID heard
98.3 - RJR, didn't get much of a signal anywhere but there was some soul and funk on this freq. so I'm assuming it's them.
99.3 - Digital Soul Radio, good signal with RDS in most places.
99.5 - Venture, ok-ish signal around the city. No RDS.
99.7 - Intent, listenable signal city-wide. The station is actually at http://intentlive.com/
now, heard the DJ advertising it. No RDS like it used to have.
101.2 - Unique, fair signal around most parts, got RDS at one point.
101.8 - Presumed Bizim, talk in Turkish/Arabic. Not the best signal.
102.4 - Presumed Wax, very low audio, playing D&B/Jungle.
102.8 - Radyo Umut, listenable in parts of London. Seen with RDS RDYOUMUT
103 - UJR, saw it with RDS once but seemed like it didn't want to decode much. Listenable signal around most of the city.
104.1 - Presumed Omega, playing R&B/HipHop.
105.6 - Playback, good signal throughout the city, RDS easily received.
106.5 - Project, ok signal throughout the city.
107.5 - UKRaw, very weak signal no matter where I went. Was definitely there though as I heard some D&B.